Hi I have followed the instructions in

https://knowledge.safe.com/articles/45314/working-with-soap-services.html

to call a WCF service. The XML request is correct, as I can get a successful response back when copying/sending same request via soapui.

However HTTPCaller gives me the following error message:

The message with Action '' cannot be processed at the receiver, due to a ContractFilter mismatch at the EndpointDispatcher. This may be because of either a contract mismatch (mismatched Actions between sender and receiver) or a binding/security mismatch between the sender and the receiver. Check that sender and receiver have the same contract and the same binding (including security requirements, e.g. Message, Transport, None).</faultstring></s:Fault></s:Body></s:Envelope>